[TechAssist] Re: Chipper Check / CTC 177 series Question
- From: Jim Myers <jr.myers@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 26 May 2004 15:41:42 -0500
Jon, did you read the CC help files set up procedure? It implies that
the chip must be in the chassis and all you can doe with a 175, 176,
177, 186 and 187 is to reinitialize. See copy/paste below:
CTC175, 176, 177, 186 & 187 Setup Procedure
The only procedure that can be performed on these chassis with Chipper
Check is initializing the EEPROM to factory settings. The set MUST be
OFF and UNPLUGGED when initializing the EEPROM. You must first
determine if your set has a Motorola or ST microprocessor. The IC,
U3101, will be marked with either ST or Motorola. If the IC is a
Motorola ground pin 1, if the IC is marked ST ground pin 2. Retain this
ground while the EEPROM is being initialized. Remove the ground before
restoring the set to operation. Prior to initializing the EEPROM, an
external 5 volt supply and a 1K resistor must be connected. DO NOT
apply the external 5 volts until after the chassis is selected in the
Chipper Check software. If 5 volts is applied before the chassis is
selected a NO COMMUNICATIONS error may result.
The diagram below shows how Chipper Check is connected to the chassis.
Adapter board 212121 (supplied), 7 jumper wires and an IC clip are used
to connect the Chipper Check interface box to the EEPROM. You may
connect leads directly to the IC or use an IC clip. The IC clip shown
in the diagram is a Pomonaâ clip, Pomona part number 5108, available
from most parts supply houses.
*******************************************************************************************************************
Since 1972
Jim Myers
Telrad Electronics
Fort Wayne, Indiana
Jon Garver wrote:
> OK CC users, I'm trying to get CC to communicate with an
> EEPROM out of this 177 chassis. When I said "out" I mean that
> I have an adapter with I.C. socket and external 5V source.
>
> I don't see the 177 associated with any of the interface
> adapters. I've checked one out of a 175 and it works OK.
> I tried a new chip for another 177 and can't get it to
> communicate with CC either.
>
> The interface adapter that I use with my homemade adapter
> is the one designated for CTC 174, 175, 18X series, 19X series
> an 203.
>
> The 177 is in the "chassis" list so is there something else that
> I need to check it or something different that I have to do to
> get it to communicate?
>
> Jon Garver
> Heritage Television Service
> 204 Heritage Rd.
> Monticello, Indiana U.S.A.
> 574-583-9681 Voice & FAX
> jongar@xxxxxxxxxxxxx or
> htv1@xxxxxxxxx (for file u.l.)
>
>
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